ATI RN
Cells Tissues and Organs Comprehension Questions Questions
Question 1 of 5
Atoms of the same atomic number but of different mass numbers (different numbers of nuclear particles) are referred to as:
Correct Answer: B
Rationale: Isotopes have the same proton number but different neutron numbers, thus different mass numbers.
Question 2 of 5
The sequence of amino acids in protein molecules is determined by the sequence of:
Correct Answer: C
Rationale: mRNA's nucleotide sequence (codons) dictates the amino acid order in proteins.
Question 3 of 5
The inability to absorb digested nutrients may be due to damage of which type of epithelia?
Correct Answer: B
Rationale: Simple columnar epithelium in the gut absorbs nutrients; damage impairs this function.
Question 4 of 5
Identify the three main components of a human cell.
Correct Answer: D
Rationale: A human cell consists of the cytoplasm (fluid and organelles), plasma membrane (boundary), and nucleus (genetic control center).
Question 5 of 5
What is the function of the nucleolus?
Correct Answer: B
Rationale: The nucleolus assembles ribosomes, which then synthesize proteins.